If it were new that would be an awesome deal, but for used, scratches or not, I would expect more for $800.00. Does it come with anything else?

sump

filters

protien skimmer

lights

any extras at all

Since your going through a middle man, $800.00 probably isn't to bad, but if you could find the individual selling the tank...The LFS is probably paying in the neiborhood of $300.00-$400.00, If it was me, unless I was just totally itching for a new tank, I'd pass. Of course, I've had a large acryllic tank before, and I won't own one again, unless I'm using it as a sump....

For me, yes that would be the determining factor. I can give you a list of why acrylic is better than glass, but until you own one, you just never understand how easy it is to scratch one. You can breathe on it too heavy and it will scratch....